Cast Culling the Weak by paying {B} and sacrificing Scholar of the Ages, adding {B}{B}{B}{B}.
Cast Exhume by paying its mana cost, returning Scholar of the Ages from your graveyard to the battlefield and allowing each opponent to return a creature from their graveyard to the battlefield.
When Scholar of the Ages enters, it triggers, returning Culling the Weak and Exhume from your graveyard to your hand.
Repeat.

Each opponent returns all creature cards from their graveyard to the battlefield

Infinite black mana

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Infinite death triggers

Infinite magecraft triggers

Infinite storm count

Return all instant and sorcery cards from your graveyard to your hand

Scholar of the Ages

Exhume

Culling the Weak

Cast Burnt Offering by paying {B} and sacrificing Scholar of the Ages, adding seven mana in any combination of {B} and/or {R}.
Cast Exhume for {1}{B}, returning Scholar of the Ages from your graveyard to the battlefield.
Scholar of the Ages triggers, returning Burnt Offering and Exhume from your graveyard to your hand.
Repeat.

Infinite red mana

Burnt Offering

Cast Exhume by paying its mana cost
Holding priority, cast Dualcaster Mage by paying its mana cost.
When Dualcaster Mage enters, it triggers, targeting Exhume.
Holding priority, activate Ashnod's Altar by sacrificing Dualcaster Mage.
Resolve the Dualcaster Mage trigger, copying Exhume
Resolve the Exhume copy, returning Dualcaster Mage from your graveyard to the battlefield.
Repeat from step 3.

Infinite colorless mana

Ashnod's Altar

Dualcaster Mage

Activate Cormela by paying {1} and tapping it, adding {U}{B}{R} that can only be spent to cast instant or sorcery spells.
Activate Ashnod's Altar by sacrificing Cormela, adding {C}{C}.
When Cormela dies, it triggers, returning Exhume from your graveyard to your hand.
Cast Exhume by paying {1}{B}, causing each player to return a creature card from their graveyard to the battlefield, with you choosing to return Cormela.
Repeat.

Infinite blue mana that can only be spent to cast instant and sorcery spells

Infinite red mana that can only be spent to cast instant and sorcery spells

Cormela, Glamour Thief

Activate Cormela by paying {1} and tapping it, adding {U}{B}{R} that can only be spent to cast instant or sorcery spells.
Activate Thermopod's second ability by sacrificing Cormela, adding {R}.
When Cormela dies, it triggers, returning Exhume from your graveyard to your hand.
Cast Exhume by paying {1}{B}, causing each player to return a creature card from their graveyard to the battlefield, with you choosing to return Cormela.
Repeat.

Thermopod

Activate Cormela by paying {1} and tapping it, adding {U}{B}{R} that can only be spent to cast instant or sorcery spells.
Activate Phyrexian Altar by sacrificing Cormela, adding {1}.
When Cormela dies, it triggers, returning Exhume from your graveyard to your hand.
Cast Exhume by paying {1}{B}, causing each player to return a creature card from their graveyard to the battlefield, with you choosing to return Cormela.
Repeat.

Combos with "Exhume"